Test/Review of BlitzWolf 18W QC3 BW-S5

12 posts / 0 new
Last post
HKJ
HKJ's picture
Offline
Last seen: 1 week 1 day ago
Joined: 05/24/2011 - 12:23
Posts: 7455
Location: Copenhagen, Denmark
Test/Review of BlitzWolf 18W QC3 BW-S5

BlitzWolf 18W QC3 BW-S5
DSC_3588
Official specifications:


  • Model: BW-S5
  • Tech: Power3S Qualcomm QC3.0
  • Total Power: Rated 18W (24W Max)
  • Input: AC 100-240V~50/60Hz 0.5A
  • Output: QC2.0 Mode: 9V/2A 12V/1.5A (Max)
  • QC3.0 Mode: 3.6-6.5V ~3A 6.5-9V ~2A 9-12V ~1.5A
  • Size: 55 × 46 × 24 mm / 2.17 × 1.81 × 0.94in
  • Color: White, Black
  • Weight: 65g±10g
  • Certification: FCC, Qualcomm QC3.0, DOE VI

I got it from Banggood
DSC_3561
I got this charger in a fairly plain cardboard box. The square one is the US version, the other one is the EU version.
DSC_3585 DSC_3586
The box contained the charger and a instruction sheet.
DSC_3588
DSC_3591

DSC_3589 DSC_3590
DSC_3592
DSC_3593
DSC_3594 DSC_3595
Measurements


  • Power consumption when idle is 0.06 watt at 230VAC and 0.04 watt at 120VAC
  • Usb port coding usb charger (DCP), QuickCharge 2 and QuickCharge 3
  • Minimum QuickCharge 3 voltage is about 3.9 volt.

BlitzWolf%2018W%20QC3%20BW-S5%20load%20sweep
The charger is rated for 3A at 5 volt and the overload protection trips at 3.5A, this looks fine.
BlitzWolf%2018W%20QC3%20BW-S5%20QC9V%20load%20sweep
At 9V it is rated for 2A, but can deliver 3.2A before it drops to 5 volt.
BlitzWolf%2018W%20QC3%20BW-S5%20QC12V%20load%20sweep
At 12V it is rated for 1.5A, but can deliver 2.4A before it drops to 5 volt.
BlitzWolf%2018W%20QC3%20BW-S5%20QC9V%20120VAC%20load%20sweep
With 120VAC mains the current limit is slightly lower, here it stars dropping out at about 2.8A, but do not quit completely before 3.5A
BlitzWolf%2018W%20QC3%20BW-S5%20QC12V%20120VAC%20load%20sweep
At 12V it is the same for both 120VAC and 230VAC.
BlitzWolf%2018W%20QC3%20BW-S5%20QC12V%20load%20test
No problem with rated load for one hour.
BlitzWolf%2018W%20QC3%20BW-S5%20QC12V%20120VAC%20load%20test
Here I am above rated load, I am using 2A at 12 volt, but the charger handles it fine.
The temperature photos below are taken between 30 minutes and 60 minutes into the one hour test.
Temp2949
M1: 47,4°C, M2: 50,8°C, M3: 38,6°C, HS1: 57,7°C
The hot spot here is the transformer.
Temp2950
M1: 49,1°C, HS1: 51,3°C
Temp2951
M1: 52,6°C, M2: 49,5°C, HS1: 53,7°C
HS1 is the rectifier.
Temp2952
M1: 50,9°C, HS1: 57,4°C
Again HS1 is the rectifier.
Temp2953
M1: 50,6°C, HS1: 53,4°C
Temp2982
M1: 55,4°C, HS1: 63,9°C
This test is done at 120VAC with 2A on 12V, i.e. the charger is overloaded.
Temp2984
M1: 52,5°C, HS1: 67,0°C
This test is done at 120VAC with 2A on 12V, i.e. the charger is overloaded.
It is no big surprice that the traformer gets hotter when the power is increased.
10ohm
At 0.5A the noise is 19mV rms and 330mVpp.
5ohm
At 1A the noise is 12mV rms and 216mVpp
2ohm
At 2.5A the noise is 24mV rms and 317mVpp.
5ohm9V120VAC
At 1.2A 9V with 120VAC supply the noise is 18mV rms and 250mVpp.
I did try a couple more, they where all around the same as the ones show above.
Tear down
DSC_3662
This charger was to easy to open, I just had to break the mains pins sideways with some pliers.
DSC_3663
The input has a fuse and a common mode coil. There is also a inductor between the two mains capacitors. The blue capacitor is the safety capacitor.
All the switching and feedback is handled with one large IC (U1 SC1271K) and synchronous rectification with Q1.
DSC_3665
DSC_3666 DSC_3668
DSC_3667
DSC_3664
One this side of the circuit board there is the bridge rectifier (DB1) and the QC3 controller (U2 SC0163). Notice R12 (R030), this is probably used for current sense.
DSC_3669
DSC_3670
The safety distance looks good.
Testing with 2500 volt and 5000 volt between mains and low volt side, did not show any safety problems.
Conclusion
The QuickCharge 3 function do not deliver more power, but allows finer adjustment of the voltage, the idea is to reduce the heat generated in the phone and this way make it possible to charge faster.
This looks like a good charger with QC2 and QC3 support.
Notes
All measurements are done with the white US version at 230VAC, except where otherwise noted.
The usb power supply was supplied by Banggood for a review.
Index of all tested USB power supplies/chargers
Read more about how I test USB power supplies/charger

My website with reviews of many chargers and batteries (More than 1000): https://lygte-info.dk/

paul02
Offline
Last seen: 2 months 1 week ago
Joined: 01/29/2016 - 05:01
Posts: 11
Location: Singapore

Cool review! Hope you can get Anker’s QC 3.0 Wall Charger for testing too! I believe it was the first QC 3.0 Wall Charger to be released.

HKJ
HKJ's picture
Offline
Last seen: 1 week 1 day ago
Joined: 05/24/2011 - 12:23
Posts: 7455
Location: Copenhagen, Denmark
paul02 wrote:
Hope you can get Anker’s QC 3.0 Wall Charger for testing too! I believe it was the first QC 3.0 Wall Charger to be released.

It is not in my queue at the moment.

My website with reviews of many chargers and batteries (More than 1000): https://lygte-info.dk/

djozz
djozz's picture
Offline
Last seen: 1 day 14 hours ago
Joined: 09/07/2012 - 17:04
Posts: 18291
Location: Amsterdam

Thanks for the review :-), it looks like Blitzwolf is doing very well as a new brand.

HKJ
HKJ's picture
Offline
Last seen: 1 week 1 day ago
Joined: 05/24/2011 - 12:23
Posts: 7455
Location: Copenhagen, Denmark
gauss163 wrote:
What method did you use to test QC3 functionality?

This: http://lygte-info.dk/review/USBmeter%20yzxStudio%20load%20ZL1000%20UK.html

My website with reviews of many chargers and batteries (More than 1000): https://lygte-info.dk/

dodge_911
dodge_911's picture
Offline
Last seen: 3 years 1 month ago
Joined: 02/18/2016 - 15:07
Posts: 219
Location: DodgeReviews HQ

I concur with your review Smile lol.
I’m posting mine on my blog tomorrow…

:: YouTube ::
http://bit.ly/dodgereviewsyt
:: Discord ::
http://discord.gg/fqJEDyy
:: Join the Discord ::
we need more BLF'ers!
xephon
xephon's picture
Offline
Last seen: 3 months 18 hours ago
Joined: 04/30/2013 - 07:19
Posts: 81
Location: /ˈsɪŋəpɔr/

paul02 wrote:
Cool review! Hope you can get Anker’s QC 3.0 Wall Charger for testing too! I believe it was the first QC 3.0 Wall Charger to be released.

It’s pretty much identical, right down to the wordings “ANKER” on the transformer. http://blog.sina.com.cn/s/blog_63f7b4540102vy7v.html
Seems like Blitzwolf just rearranged the same components into a more compact pcb.


HKJ
HKJ's picture
Offline
Last seen: 1 week 1 day ago
Joined: 05/24/2011 - 12:23
Posts: 7455
Location: Copenhagen, Denmark
xephon wrote:
It’s pretty much identical, right down to the wordings “ANKER” on the transformer. http://blog.sina.com.cn/s/blog_63f7b4540102vy7v.html Seems like Blitzwolf just rearranged the same components into a more compact pcb.

They are probably both based on the same application note from the manufacturer of the big chip.
It also look like the circuit board a designed at the same place (Look at the board number and date, they look the same).
But the parts are not exactly the same.

My website with reviews of many chargers and batteries (More than 1000): https://lygte-info.dk/

paul02
Offline
Last seen: 2 months 1 week ago
Joined: 01/29/2016 - 05:01
Posts: 11
Location: Singapore

xephon wrote:
paul02 wrote:
Cool review! Hope you can get Anker’s QC 3.0 Wall Charger for testing too! I believe it was the first QC 3.0 Wall Charger to be released.

It’s pretty much identical, right down to the wordings “ANKER” on the transformer. http://blog.sina.com.cn/s/blog_63f7b4540102vy7v.html
Seems like Blitzwolf just rearranged the same components into a more compact pcb.


!{width:25%}http://tc.sinaimg.cn/maxwidth.2048/tc.service.weibo.com/p/note_youdao_co...!

Thanks for the link!

oldman777
oldman777's picture
Offline
Last seen: 1 week 2 days ago
Joined: 12/04/2013 - 12:01
Posts: 91
Location: From no quarter

Got the same from the banggood yesterday and it turned out to be completely dead upon arrival.
BlitzWolf® BW-S5
I almost do not understand in electronics, but curiosity won and I still dismantled it.
After the examination, I did not understand what exactly is faulty.
Noticed that all the contents are completely different from the tested above.
Think this information for someone else may be useful.

View post on imgur.com

View post on imgur.com
samgalax
Offline
Last seen: 3 hours 31 min ago
Joined: 03/22/2012 - 18:06
Posts: 722
Location: In front of you!

Probably fake

Please SUBSCRIBE to my youtube channel (flashlights, electronic gadgets and various stuff..)

https://www.youtube.com/channel/UCCF3RcoQ3Ff05Cr4-Gg5qAw

I am a beginner. So please help me to make the channel "grow up"

Thanks!!

oldman777
oldman777's picture
Offline
Last seen: 1 week 2 days ago
Joined: 12/04/2013 - 12:01
Posts: 91
Location: From no quarter

BlitzWolf – it seems to produce a banggood.
I think this has changed the contents, and now all products look like that.